通常,契约理论将拥有私人信息的决策主体称为代理人,将不拥有私人信息的决策主体称为委托人,并假设委托人拥有选择代理人和安排契约的权利。在这种委托代理框架下,最优契约设计问题就可表述为:委托人如何设计一个最优契约以克服代理人 In general, the contract theory calls the decision-maker who owns the private information an agent, the decision-maker who does not own the private information as the principal, and supposes that the client owns the right to choose the agent and arrange the contract. Under such a principal-agent framework, the optimal contract design problem can be expressed as: how the principal design an optimal contract to overcome the agent